 | | RCX Blowed up?
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Today I was using NQC for the first time using RCX Command Center. Because I have a 1.0 RCX I thought: I have two original Lego-adapters and why shouldn't I use one? So, for the first time I have the RCX, I used a powersuply. After some playing I (...) (25 years ago, 31-Oct-00, to lugnet.robotics)
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| | Re: Recommendation for a robotics set.
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DDK(Droid Developer Kit), DSDK(Dark Side Developer Kit), RDS(Robotics Discovery Set) then RIS(Robotics Invention System), you can buy them in eBay or your local toy shop. DDK and DSDK use Micro-Scout, RDS uses Scout and RIS uses RCX You can refer (...) (25 years ago, 31-Oct-00, to lugnet.robotics)
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| | >>> RIS vs. RDS <<<
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Hi, what's the diference between RIS and RDS ? Thanx. Norbert (25 years ago, 31-Oct-00, to lugnet.robotics)
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| | Increase RCX outputs.
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I expanded the RCX outputs from 3 to 12 (6 sets of 2)using 2 rotary switches and one feedback POT (50k ohm). The 3rd RCX output is used to to energize a motor that rotates both rotary switches and the pot simultaneously( they are mechanically liked (...) (25 years ago, 31-Oct-00, to lugnet.robotics)
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| | Re: RCX2
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Bill, If you go to (URL) then follow the 'Tips and Tricks' link, the RCX2 beta SDK is under the 'Master Coders' section. A quick quote from the site: <quote> RCX 2.0 BETA SDK Since we made a few small changes and additions to the firmware after we (...) (25 years ago, 30-Oct-00, to lugnet.robotics)
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| | Re: Why 2 robotics newsgroups?
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[followups to lugnet.admin.nntp] (...) Well, actually, there's only one lugnet.robotics newsgroup. It does has subgroups, however, so perhaps that is what you were seeing? At any rate, the first URL you gave above (well, partial URL -- it's missing (...) (25 years ago, 30-Oct-00, to lugnet.robotics, lugnet.admin.nntp)
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| | Re: Rant
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One point that hasn't been mentioned in all the foregoing discussions about Lego's direction with the new Technic sets is what I think must be of vital concern to them and that is "critical pieces". Especially these days, now it's so easy to (...) (25 years ago, 30-Oct-00, to lugnet.robotics)
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| | RCX2
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Hi, I'm interested in RCX2 firmware. Is it something that can be downloaded? What capabilities does it have? TIA, Bill Weiss Senior Software Developer ASSET InterTech, Inc. bweiss@asset-intertech.com (25 years ago, 30-Oct-00, to lugnet.robotics)
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| | Re: Lego Robotics Contest at Lawrence Tech
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Forwarding to robotics for wider coverage (...) (25 years ago, 30-Oct-00, to lugnet.loc.us.mi, lugnet.robotics, lugnet.robotics.events)
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| | Why 2 robotics newsgroups?
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Does anyone know why there are two groups: www.lugnet.com/robotics/ and www.news.lugnet.com/robotics/? Are they the same? If so, why are the posted notes not the same in both? Is a puzzlement... Jerry (25 years ago, 30-Oct-00, to lugnet.robotics)
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| | RE: Windows Millennium Edition
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i have installed the ME upgrade with no adverse effects. Didn't even think about it really but i did keep the uninstall files just incase. phil vanderpoel -----Original Message----- From: news-gateway@lugnet.com [mailto:news-gateway...net.com]On (...) (25 years ago, 30-Oct-00, to lugnet.robotics)
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| | Re: specific pieces...
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Try Baylit ((URL) ) or Brickbay ((URL) ) or Sanburn Systems ((URL) ). These three are non-auction bricksellers. I haven't bought from them myself, but heard good stories about them. You might want to post this in some of the lugnet.market groups as (...) (25 years ago, 29-Oct-00, to lugnet.robotics)
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| | specific pieces...
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I would like to order some specific lego pieces (I don't want to purchase an entire set). Does anyone know of a good on-line source for this?? Thanks, jim (25 years ago, 29-Oct-00, to lugnet.robotics)
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| | Re: First Internet Robot Contest
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Right, no connection! Steve's "First Internet Robot Contest" has nothing to do with FIRST, the organization formerly known as "US FIRST," which is presently cooperating with LEGO in the "FIRST LEGO League" (FLL). Todd, thanks for allowing me to (...) (25 years ago, 29-Oct-00, to lugnet.robotics.handyboard, lugnet.robotics)
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| | Re: First Internet Robot Contest
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(...) Fred, Steve, The word "First" here has nothing to do with FIRST[1], right? --Todd [1] (URL) (25 years ago, 29-Oct-00, to lugnet.robotics.handyboard, lugnet.robotics)
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| | Recommendation for a robotics set.
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Hi all, I am new to Lego, but from what I have seen and read in the newsgroup it seems an easy way to have some fun with robotics. I am getting a HandyBoard as a brain and I wonder which is the best set to get started, something with lots of gears, (...) (25 years ago, 29-Oct-00, to lugnet.robotics)
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| | Re: Windows Millennium Edition
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(...) While not directly related to Lego Software, ME *REALLY* slows down the machine. They must have used blocks of LEAD in their code... I'd recommend against it. Dean -- Coin-Op's For Sale!: (URL) Lego Workshop: (URL) Lego Club: (URL) (25 years ago, 29-Oct-00, to lugnet.robotics)
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| | const int syntax
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I cannot seem to find the right syntax for const int in NQC. For example, in trying to synchronize LEFTLEGS and RIGHTLEGS in a 6-leg robot, this piece of code does *not* work: int count; //declare a variable 'count' count = 0; //initialize 'count' (...) (25 years ago, 29-Oct-00, to lugnet.robotics)
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| | new legOS documentation
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Thanks to the efforts of a number of people, there is a raft of new documents up at the legOS site. Because of the growing amount of documentation, I've organized a new page to keep track of all the available docs: (URL) things up there now: *LegOS (...) (25 years ago, 29-Oct-00, to lugnet.robotics.rcx.legos, lugnet.robotics)
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| | Windows Millennium Edition
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I have a Windows Millennium Edition upgrade ready to install onto my Win98 machine. Before I do the deed, I'd just like to check that if there are any known problems the Lego Mindstorms software or NQC in the Windows ME environment. Kerry -- (...) (25 years ago, 29-Oct-00, to lugnet.robotics)
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| | Re: whats wrong with this events ?
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You should psot this in lugnet.robotics.rcx.nqc Zhengrong (...) (25 years ago, 29-Oct-00, to lugnet.robotics)
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| | whats wrong with this events ?
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I tried to make a proximitysensor with was "direction aware", this means i used two lightsensors on port 1 and 3. And tried to make the change of direction dependable of with sensor(event) was triggert. See code : #define EVENT_PROXL 0 // proximity (...) (25 years ago, 28-Oct-00, to lugnet.robotics)
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| | Re: vision command
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(...) Yes, almost. It's just a different colour. Dean -- Coin-Op's For Sale!: (URL) Lego Workshop: (URL) Lego Club: (URL) (25 years ago, 28-Oct-00, to lugnet.robotics, lugnet.robotics.vc)
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| | vision command
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I'm new to this newsgroup so I don't know if this has already come up, but is the vision command camera the same as in the movie maker set? (25 years ago, 28-Oct-00, to lugnet.robotics)
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| | Re: Using one motor to do 2 things...
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I just posted a message on Thursday about this. I solved this problem in Minerva, in my book _The Unofficial Guide to Lego Mindstorms Robots_. Then I solved it again, in a different way, for the RIS 1.5-compliant version of Minerva. The building (...) (25 years ago, 28-Oct-00, to lugnet.robotics)
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| | Re: What is with the Technic Stormtrooper?
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(...) This is certainly true - but when I think "I need more I/O" - I also think "I/O should be modular and infinitely expandable". I don't want *any* practical limit to the number of motors and sensors. A mere 'Mark II RCX' with (say) 5 inputs and (...) (25 years ago, 28-Oct-00, to lugnet.robotics)
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| | Re: Using one motor to do 2 things...
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(...) I build these and it solves all my problems for all motors and sensors... (URL) the link to build and see what it's about... (...) Dean -- Coin-Op's For Sale!: (URL) Lego Workshop: (URL) Lego Club: (URL) (25 years ago, 27-Oct-00, to lugnet.robotics)
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| | Re: Using one motor to do 2 things...
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Could you do something with this trick? (URL) (25 years ago, 27-Oct-00, to lugnet.robotics)
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| | Re: Using one motor to do 2 things...
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The approach I would take would be to use a splitter (ratchet or worm) and make one output shaft a gear selector for a transmission, and the other shaft the input power for the transmission. The transmission design would be tricky, because the (...) (25 years ago, 27-Oct-00, to lugnet.robotics)
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| | Re: Semicolon (;) Confusion
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John, Thanks for that answer. That same question has haunted me for some time. -- Bob Fay rfay@we.mediaone.net The Shop (URL) A. Tamplin" <lego-robotics@crynwr.com> wrote in message news:Pine.A32.3.91.1...net.com... (...) syntax (...) below. (...) (...) (25 years ago, 27-Oct-00, to lugnet.robotics)
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| | Re: Using one motor to do 2 things...
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I don't know if this will help, but i'm currently working on a device that lets one motor drive four seperate axles. Downside is that it's one direction only, and only one axle can be used at one time. Howerver, you could use an extra gear to make (...) (25 years ago, 27-Oct-00, to lugnet.robotics)
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| | Re: Using one motor to do 2 things...
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(...) I think it would be very difficult to get workable bidirectional control of 2 things from one motor. However, it is quite possible to multiplex motors so you can do many more then 2 things from 2 motors. For example, you can have one motor (...) (25 years ago, 27-Oct-00, to lugnet.robotics)
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| | Re: Using one motor to do 2 things...
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Stupid me I just thought of another problem that makes this an engineering impossiblity (I think). How to reverse directions of the left/right action? It seems making the forward/backward motion and the left/right motion on the same motor is (...) (25 years ago, 27-Oct-00, to lugnet.robotics)
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| | Re: What is with the Technic Stormtrooper?
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I think that there was some evidence a while ago about LEGO reps reading the lists. At least they are hearing us, now we need to see if they are doing anything about it. Andy (...) (25 years ago, 27-Oct-00, to lugnet.robotics)
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| | Re: Using one motor to do 2 things...
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Hi Jason It's a Friday night and my mind has disengaged so I've not totally thought these through, but you could try a combination of ratchets and directional gearboxes (as seen in the Unofficial guide to Lego Mindstorms by J Knudsen). Basically you (...) (25 years ago, 27-Oct-00, to lugnet.robotics)
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| | Using one motor to do 2 things...
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Hello Mindstorms fans, I am suffering through a bit of an engineering block. Let me explain: I had an idea to build a drivetrain that will provide both front/back movement and left/right(turning) movement off one motor. My question is: is this (...) (25 years ago, 27-Oct-00, to lugnet.robotics)
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| | Re: Semicolon (;) Confusion
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(...) NQC implements a syntax similar to C. In C, while and if statements have a single statement that is executed if the condition is true. A null statement is a valid statement, and a block of statements enclosed in {} can be substituted or a (...) (25 years ago, 27-Oct-00, to lugnet.robotics)
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| | (canceled)
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| | Semicolon (;) Confusion
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In some cases Mark Overmars great RCX Command Center does not flag syntax errors for incorrect use of an ending semicolon, as in the example below. Could someone please explain how semicolons work in NQC? Perhaps there is a good reason for *not* (...) (25 years ago, 27-Oct-00, to lugnet.robotics)
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| | Re: What is with the Technic Stormtrooper?
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Wow! I am so pleased to know that LEGO are keeping an eye on how those of us, who are actually prepared to express our opinions in a public forum like this, feel about their products. I suspect that there are entirely different divisions within the (...) (25 years ago, 27-Oct-00, to lugnet.robotics)
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| | Re: one motor- four diffrent axles
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(...) See www.ldraw.org :) It even describes how to output to povray to get a really good looking final image! bfn - Ciaran (25 years ago, 27-Oct-00, to lugnet.robotics)
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| | Re: Pawl and rachet? -- slick!
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Wow, this is very cool, I like the sliding-worngear principle, a neat hack -- and it's x2 more simplier than my design. :) Thanks for the help! (...) (25 years ago, 26-Oct-00, to lugnet.robotics)
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| | Ignore the drawing is last post
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sorry the drawings got messed up, please ignore them (25 years ago, 26-Oct-00, to lugnet.robotics)
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| | one motor- four diffrent axles
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I had a great idea. I'm not sure if anyone has done this before, but I have found a way to make one motor drive four (or more) axles, individually! The downside is that only one axle can be rotated at a time and in only one direction, and I'm having (...) (25 years ago, 26-Oct-00, to lugnet.robotics)
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| | Re: Pawl and rachet?
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Hello, I designed just such a drive, using worm gears instead of ratchets. It does, unfortunately, take a tiny amout of time to shift between moving forward and spinning in place. Perhaps it will meet your needs anyway. The relevant images are steps (...) (25 years ago, 26-Oct-00, to lugnet.robotics)
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| | Pawl and rachet?
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Hello everybody again -- thank you all for the respones, sorry I haven't gotten back to some of you who emailed me privately, I've been swamped with work. I had some great lego sets recommended to me and I'm trying to find out where I can acquire (...) (25 years ago, 26-Oct-00, to lugnet.robotics)
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| | Re: What is with the Technic Stormtrooper?
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I am an AFOL because it is a very easy to use medium in which to construct and evolve mechanical devices - such as robotic platforms. I have bought a number of the older "high end" sets mainly to obtain the industrial quantities of parts that a true (...) (25 years ago, 26-Oct-00, to lugnet.robotics)
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| | Re: Infrared Ranging
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Here is a program letting you play with InfraRed Ranging using the standard Light Sensor and the built in IR Communications Port. You can play around with the THRESHOLD value with 2 light sensors and see what kind of range and consistency you get at (...) (25 years ago, 26-Oct-00, to lugnet.robotics)
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| | Re: Infrared Ranging
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"Josh Hunter" <optijosh@cs.com> wrote in message news:G318tA.LBy@lugnet.com... (...) the (...) =] Answers to all these questions can be found here: (URL) (25 years ago, 26-Oct-00, to lugnet.robotics)
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| | RE: Its a Bird! Its a Plane! No, its an RCX!?
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Some ballpark numbers without thought to temperature and pressure. Approx lift for 1 Cu Ft helium = 1 Oz. RCX = 9 Oz. You might need two.... Motors = 2 Oz ea 4 (?) required Misc structure and balloon estimate 2 pounds? Total ( minimum ballpark) (...) (25 years ago, 26-Oct-00, to lugnet.robotics)
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| | Re: Its a Bird! Its a Plane! No, its an RCX!?
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I was thinking of making a lego dirigible as part of an R&D project at my school. We came to the conclusion that we would need a baloon about the size of a small horse to get the neccesary equipment into the air. Though I still think that it would (...) (25 years ago, 26-Oct-00, to lugnet.robotics)
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| | Re: Is Robotics Discovery Set good?
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Hi, Bradley. As other people already told you, RIS is the most complete set. It is also the more expensive too. If you are looking for a cheaper and easier version, go for the Discovery set. The controller that comes with it, the Scout, has some (...) (25 years ago, 26-Oct-00, to lugnet.robotics, lugnet.loc.ca.on)
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| | Re: Its a Bird! Its a Plane! No, its an RCX!?
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"Josh Hunter" <optijosh@cs.com> wrote in message news:G319Fs.M75@lugnet.com... (...) set (...) I've seen RCX's used for this sort of thing before - one that comes to mind is one with a heat sensor to measure aitr temp at different heights, and (...) (25 years ago, 26-Oct-00, to lugnet.robotics)
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| | Its a Bird! Its a Plane! No, its an RCX!?
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Hey! Anyone thought about making their rcx airborne? I figure we can do it with helium(lots and lots of helium) or with a hot air ballon. You could set up propellers and use a skid steering system. Yeah it would be reeeeeally difficult but i think (...) (25 years ago, 26-Oct-00, to lugnet.robotics)
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| | Infrared Ranging
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Hey. Does anyone know how i can accomplish IR ranging with my RCX? does the light sensor respond to IR? how does it work? lend a brother a hand... lol =] (25 years ago, 26-Oct-00, to lugnet.robotics)
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| | Live camera system with the LEGO Cam
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Hi all, I constructed the live camera system with the LEGO Cam. It is possible to construct it easily using muse's free software. ListCam - fixed point observation image record system (URL) - Stationing automatic FTP forwarding software (URL) (...) (25 years ago, 26-Oct-00, to lugnet.robotics.vc, lugnet.robotics, lugnet.loc.jp)
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| | Re: Is Robotics Discovery Set good?
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Hi I think RDS is the best to you, except touch sensor, you also can use external light sensor in Scout, you can do most thing that RCX can do. I don't know if you can write NQC program as you are so young, you can refer page at (URL) there is a (...) (25 years ago, 26-Oct-00, to lugnet.robotics, lugnet.loc.ca.on)
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| | Re: RIS 2.0
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(...) Follow this thread... (URL) For Sale!: (URL) Lego Workshop: (URL) Lego Club: (URL) (25 years ago, 26-Oct-00, to lugnet.robotics)
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| | Re: LEGO 2001
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(...) Lego had pics of the RCX factory up on their site a year ago. The one pic they showed showed about 100,000 bricks in boxes and whatnot. I think the number is legit. The number isn't used for anything other then the MS website. Most items (...) (25 years ago, 26-Oct-00, to lugnet.robotics)
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| | Lego my Lego
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Thanks you all for your NT insights. I passed them on to my friend. Trying to get him in on the Lego way... Jim RCX 1.0 421416 (...) (25 years ago, 26-Oct-00, to lugnet.robotics)
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| | Re: LEGO 2001
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|
(...) (I have 191316 - a 1.0 set that was bought in July this year - so it was probably a late-model 1.0) (...) Well, I'm a little suprised that Lego went to all the expense to number each RCX individually - but given that they evidently did, I (...) (25 years ago, 26-Oct-00, to lugnet.robotics)
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| | Re: Is Robotics Discovery Set good?
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(...) RIS is still selling in the US for US$180 or so - RDS has dropped A LOT in price and our local 'Fry's discount electronics warehouse has them at US$68. Droid developers is hopeless - except perhaps as an add-on set once you have one of the (...) (25 years ago, 26-Oct-00, to lugnet.robotics)
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| | Re: Floating Point Arithmetic (Re: NQC with C++ header file)
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(...) of (...) I will, thanks. While we are on the subject, any plans for a leJOS HOWTO? (I'm only half kidding :-). --Jose (...) writes: (...) (25 years ago, 25-Oct-00, to lugnet.robotics)
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| | RIS 2.0
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First thing I noticed on those scans is that we're moving to version 2.0 now. Anyone know what the differences are? Have they put the external power connector back? I never understood why that's gone on 1.5... I couldn't live without it. During (...) (25 years ago, 26-Oct-00, to lugnet.robotics)
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| | Re: NT
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|
"James Stanton" <lego-robotics@crynwr.com> wrote in message news:Pine.LNX.4.10.1...00@mail... (...) I installed 1.0 on a Dell CPx Laptop running NT4.0, works fine. -Rob. (25 years ago, 26-Oct-00, to lugnet.robotics)
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| | Re: NT
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(...) From what I understand the 1.5 software may support NT. Dean -- Coin-Op's For Sale!: (URL) Lego Workshop: (URL) Lego Club: (URL) (25 years ago, 26-Oct-00, to lugnet.robotics)
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| | Re: Is Robotics Discovery Set good?
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|
(...) You can do that with the Scout. (Note: Micro-Scout and Scout are NOT the same) The scout comes with some nice stuff. But to use the full power of the Scout you're going to need a transmitter for the PC. Lego or Ebay should have them. The (...) (25 years ago, 26-Oct-00, to lugnet.robotics, lugnet.loc.ca.on)
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| | NT
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Does the RCX cd come with an NT driver? I have a friend that is interested. Thanks, JIm (25 years ago, 26-Oct-00, to lugnet.robotics)
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| | Re: Is Robotics Discovery Set good?
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|
(...) come as (...) I think the Robot Invntion system is too much money. Since i'm gettng the Cyber Strikers set, a $60 dinosaur book, and perhaps other things for Christmas too, I don't think I'd be allowed to do that. And I don't really like (...) (25 years ago, 25-Oct-00, to lugnet.robotics, lugnet.loc.ca.on)
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| | Re: single motor pneumatic pump and switch
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(...) The arm designs in the Mars Expansion pack are great for that. They have/had pics on the web site that shows it picking up and dropping a pop can... Dean -- Coin-Op's For Sale!: (URL) Lego Workshop: (URL) Lego Club: (URL) (25 years ago, 25-Oct-00, to lugnet.robotics)
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| | Re: LEGO 2001
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(...) I have bricks numbered 026985, 131860 &155226. All 1.0's. So I don't think the first number is a control number. I have a friend that has an 008xxx brick. He picked his up the same week as me so there was no relations to the numbers and (...) (25 years ago, 25-Oct-00, to lugnet.robotics)
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| | Re: Is Robotics Discovery Set good?
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|
(...) Brad, if you can, go for the RCX (RIS) It will be usable for MANY years to come as you grow. I have all three units and I can tell you that the RCX (RIS) is the best. There was another message group that discussed all this in detail. (URL) the (...) (25 years ago, 25-Oct-00, to lugnet.robotics, lugnet.loc.ca.on)
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| | Re: Floating Point Arithmetic (Re: NQC with C++ header file)
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Jose- That's great! Remind me to mention that when I release the newest version of the Linux + Lego HOWTO, if you don't see it there. Luis (...) (25 years ago, 25-Oct-00, to lugnet.robotics)
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| | Re: Is Robotics Discovery Set good?
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(...) The RDS is a really cool set. And if it is your first time programming then i think its the way to go. The only real drawbacks i see with the scout is it does not support the rotation sensor and it only has two inputs(that you can change (...) (25 years ago, 25-Oct-00, to lugnet.robotics, lugnet.loc.ca.on)
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| | Is Robotics Discovery Set good?
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I got a catalog today from a science store in Toronto, and it has relativley low priced Mindstorms. There are Droid Developers for $105.00, and Robotics Discovery for $159.95. This is quite close to the American price, so I think it is a better (...) (25 years ago, 25-Oct-00, to lugnet.robotics, lugnet.loc.ca.on)
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| | Re: What is with the Technic Stormtrooper?
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(...) Umm. I've been chopping the ball and 1/2 inch of cross axle off those useless arm pieces for a while. They make very handy spherical joints to connect parts at odd angles. You can also chop the other end including the first two technic holes (...) (25 years ago, 25-Oct-00, to lugnet.robotics)
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| | Re: single motor pneumatic pump and switch
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Nice idea. I don't have pneumatics yet, but the same idea can be applied to different applications. For example, I want to build a arm with a grabber that first closes the "hand" then lifts the arm. I believe your idea using the differential will (...) (25 years ago, 25-Oct-00, to lugnet.robotics)
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| | RE: LEGO 2001
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(...) Ahhhh, the lure of numbers :-) (...) Agreed. I know about a half dozen kids that have these sets, and most of them would rather watch TV! Don't forget that a lot of these kits are in schools. They are dumped on teachers that have little or no (...) (25 years ago, 25-Oct-00, to lugnet.robotics, lugnet.robotics.rcx.pbforth)
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| | RE: NQC with C++ header file
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Curiosity piqued, I took a look around Google and found (among others)..... (URL) haven't waded through the math manually yet, but this doesn't look too awful. Perhaps I am ignorantly naive. It sure would be neat to have sin and cos on demand. Jeff (...) (25 years ago, 25-Oct-00, to lugnet.robotics)
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| | RE: LEGO 2001
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Jeffrey Hazen (11:58 AM 10.25.2000) wrote: >The scans are interesting, but I'm afraid there isn't much excitement >robotics-wise. > >An interesting note: The serial number on one of the RCX bricks in the >scans is 502273. The earliest serial number (...) (25 years ago, 25-Oct-00, to lugnet.robotics)
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| | RE: LEGO 2001
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>Jeff wrote: > >That means (with some assumptions about completeness) Lego has banged out >over half a million of these yellow bricks.... Really? Even one tenth that number is still a sea of yellow bricks! So where is everybody? Why are there only (...) (25 years ago, 25-Oct-00, to lugnet.robotics)
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| | RE: LEGO 2001
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The scans are interesting, but I'm afraid there isn't much excitement robotics-wise. An interesting note: The serial number on one of the RCX bricks in the scans is 502273. The earliest serial number I can find is in my RCX 1.0 Constructopedia: (...) (25 years ago, 25-Oct-00, to lugnet.robotics)
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| | Floating Point Arithmetic (Re: NQC with C++ header file)
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Speaking of FP, leJOS supports floating point arithmetic, and it now has a java.lang.Math class with pow, sqrt, sin, cos, tan and atan. Brian Bagnall is working on atan2, asin, acos, etc. It's getting more and more complete. We're currently (...) (25 years ago, 25-Oct-00, to lugnet.robotics)
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| | RE: NQC with C++ header file
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(...) Well, not exactly. I guess I should elaborate. These rations are commonly used for scaling results. Of course if you do the division in integer you get 3, but what if you had an intermediate result that was 32 bits long. That's how Forth (...) (25 years ago, 25-Oct-00, to lugnet.robotics)
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| | RE: NQC with C++ header file
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Absolutely! You'd be amazed at what can be done with 16 bit integer arithmetic if you operate at some suitable scale factor, depending upon the requirements - x10, x100, x16, x256. It depends on the ease with which you can shift and/or divide. As (...) (25 years ago, 25-Oct-00, to lugnet.robotics)
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| | RE: NQC with C++ header file
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(...) Bah! We don't need no stinkin floating point. Here are a few approximations to real and transcendental numbers that you can make by dividing signed integers - the error is gennerally less that 1 in 1,000,000 pi 355 /113 sqrt(2) 19601 / 13860 e (...) (25 years ago, 25-Oct-00, to lugnet.robotics)
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| | Re: MacNQC 2.2a3 compatibility with NQC2.2r2
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(...) Do you mean Event()? I think it is defined in MacNQC 2.2a3, but there's a nasty bug in it that was only recently fixed at NQC 2.2r2. Its possible to define your own version of Event() (named something different of course) if you need to use (...) (25 years ago, 25-Oct-00, to lugnet.robotics)
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| | Re: NQC with C++ header file
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(...) What specifically do you have in mind? The limitation is going to be from the firmware bytecodes...no floating point, no transcendentals, no math larger than 16 bits. Switching over to legOS would give you floating point, but still no (...) (25 years ago, 25-Oct-00, to lugnet.robotics)
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| | Re: NQC versus Lego RCX Code Speed
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In article (...) Sorry for the delay...I haven't been keeping up with lugnet.robotics as much as I should. NQC generates the same sort of bytecodes that RCX Code does, so they are both at the same "level" (specifically bytecodes executed by an (...) (25 years ago, 25-Oct-00, to lugnet.robotics)
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| | R: Rechargable batteries
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I've use rechargable batteries (NiMh - Nickel Hydrade - , 1,2V) with the cybermaster with no problems at all. 9V (not rechargable) in the tower. The only difference is the motors are a little slower... The NiMh I used were rated for 1400ma so even (...) (25 years ago, 23-Oct-00, to lugnet.robotics)
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| | Sv: Lego Mindstorms at EXPO2000
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It looks like the robots are cooking? Did they offer a taste? Great pictures! I did not know of a Lego stand at EXPO, it looks great. EXPO is open until October 31st. I considered going - now I have to. On a side note, TRU in Denmark has CyberMaster (...) (25 years ago, 22-Oct-00, to lugnet.robotics)
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| | Re: single motor pneumatic pump and switch
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I think the key is that the differential has a lot less resisitance than the white slip gear. Your idea would work, but if I understand you, the slip gear would be slipping the whole time the pump is pumping, meaning the motor has to overcome the (...) (25 years ago, 24-Oct-00, to lugnet.robotics)
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| | Re: single motor pneumatic pump and switch
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Does this mechanism actually need the differential? If you used a 24 tooth crown (the horrible bendy one) on the motor and this turned the white slip gear for the switch and also a standard 24 tooth for the pump, the diff isn't needed, or is it just (...) (25 years ago, 24-Oct-00, to lugnet.robotics)
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| | Re: Announce: October NRB Meeting
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(...) Wish I could come, but we have a Legofest planned for The Construction Site at 3 - that would be too much driving. Regrets, -Tim (25 years ago, 24-Oct-00, to lugnet.robotics)
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| | Re: single motor pneumatic pump and switch
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Yes we do... but that's why we play with LEGO(R) too : ) "John Barnes" <lego-robotics@crynwr.com> wrote in message news:4.2.0.58.200010...lserver... (...) (25 years ago, 24-Oct-00, to lugnet.robotics)
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| | Announce: October NRB Meeting
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When: October 28th @ 1:00PM Where Nashua Public Library, Nashua, NH Directions and Info see: (URL) - Bylaws (see attachment) - Trinity Fire Fighting Robot Contest Qualifying contest in Jan. Presentation: - Skye Sweeney will be presenting "Micro Air (...) (25 years ago, 24-Oct-00, to lugnet.robotics)
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| | FLL/Robotics play opportunity at LEGOLAND (Volcanic Panic activity)
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Dear robotics fans, LEGO enthusiasts and LEGOLAND passholders: On Dec. 2nd, 2001, LEGOLAND California will host a FIRST LEGO League statewide robotics tournament. Using LEGO MINDSTORMS robotic creations, 30 different teams (...) (25 years ago, 24-Oct-00, to lugnet.legoland.california, lugnet.robotics, lugnet.robotics.events, lugnet.announce) !
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| | Re: Rechargable batteries
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My first two sets ran very hot and did not last long. I replaced them recently with Ray-O-Vac "Rechargeables" (no longer called Renewals) and, using the very same model PS1 charger they work well. Perhaps they fixed something. I think the point is, (...) (25 years ago, 23-Oct-00, to lugnet.robotics)
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| | Re: Rechargable batteries
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I traced the circuitry of the tower the other day 'cos I wanted to build one of my own to work correctly with the spirit.icx. It is not a very complicated piece of electronics and I didn't find anything in there that wouldn't tolerate an external 9 (...) (25 years ago, 23-Oct-00, to lugnet.robotics)
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| | Re: Rechargable batteries
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I have also used the Ray-O-Vac Renewals in the RCX. Unfortunately, I have not had good luck with them. They seem to work fine in the RCX, but recharging them (in the Ray-O-Vac charger specially intended for the Renewals, model PS1) invariably causes (...) (25 years ago, 23-Oct-00, to lugnet.robotics)
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